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The SPEC steel flywheel for 2015–2020 BMW 440i (B58) is a direct-fit steel replacement that restores clutch engagement characteristics and drivetrain response for manual setups. It suits owners replacing a worn or damaged OEM flywheel who want a robust, single-piece steel unit. Installation follows standard clutch replacement practices and pairs with compatible SPEC clutch components.
Spec 15-20 BMW 440i B58 Steel Flywheel
